Turbine apparatus



Aug. 1, 1944- R. B. LUCKENBACH 2,354,761

' TURBINE APPARATUS F 'iled March 8, I943 2 Sheets-Sheet 1 WITNESSES: INVENTOR W Rlcggno B. 10mm ATTORNEY 1944- R. B. LUCKENBACH 2,354,761

TURBINE APPARATUS Filed March 8, 1943 I 2 Sheets-Shegt '2 lunar": HI]

[I III] El! SEE: [I HUSH l1 SUEZ III] Racunnn B. LuuKENancH w ATTORNEY Fig.

Patented Aug. 1, 1944 TURBINE APPARATUS Richard .B. Luckenbach, Secane, Pa., assignor to Westinghouse Electric & Manufacturing Company, East Pittsburgh, :Pa., a corporation of Pennsylvania.

ApplicatiomMarch 8, 1943, Serial No. 478,460

12 Claims. (01. 60-1) This invention relates to :elastic-fluid -turbines, more particularly to lagging therefor, and has for an object to provide an improved lagging arrangement.

Another object of the invention .is to provide parts being located adjacent the high-temperathere is shown, at H), a turbine unit comprising a high-pressure turbine Ii and a low-pressure .means associated with the turbine lagging for 6 turbine l2. The governor 13 preferably is of the eliminating fire hazards. -'oi1 type, but inasmuch as its detailed construction A further :object of th invention is to provide forms no p rt Of t Present invent/i011, ifllrthel lagging fora turbine, its valve chest and governdescription is omitted. This type of governor :is ing mechanism, together with means for protect- 110 fully described in the U. S. patent of A. F. ing the governing mechanism from heat from Schwendner 2,224,321, for Hydraulic governing thgturbinghand galvte .crfietslilz. apparatus, gr-antedhto applicants assigneeron ct ano er ice 0 i e invention i to 'procember 10, 1940. T egovernor, opera ingt roug videlagging for a turbine and its hearing, tothe linkage l4, controls admission of high-temgether with means to protect the latter from that, perature motive fluid to the valve chest (Fig. heat from the former. 2). Exhaust motive fluid irom the high-pressure Another object of the invention is to provide turbine H is conducted to the low-pressure sturmeans for removing heated air from the space bine l2 by t e MOSS-Ove Co ect enclosed by the turbine lagging. The turbine rotor is provided with the usual These and other objects .are efiecte'd ;by the Z bearing it supported by the bearing pedestal l9, invention as will be apparent vfrom the followthe bearing being supplied with lubricating oil ing description and claims taken in :connection by conventional means, not shown. with the accompanying d awings, 'formingra part A transversely-extending partition 21 covered f FE 1 l pph 11; which: f g with insulating material 22 serves to divide the ig. 1s a ,perspec we view 0 apparatus em- Zo space enclosed by the lagging 20 into a first f y t -i enclosure A surrounding the heat-producing parts M;- 2 s a me elevatwnal vi o a a ed oi the installation, thatis, the turbine-i l and its turbine i a portwn of e s s broken valve chest l5, and a second space B about the a folflthe Sake f deafness; "parts of the installation which are subject to Fig 3 18 a plan v1ew of the structure shown in Contact by leaking oil, these part being the 31 i ernor I 3, the bearing I8, and its pedestal t9. g f g gg gl of the Cooperating with the transverse partition 2! w are vertical side walls "23 and end walls 24 pro- W presentday tutbme mstanatlonsiopemtz vi'ding, in efiect a vertical air duct or chimney 12 f i ges ,mngmg 33 600 R to 1200 35 25, terminating at its upper end in a grilled air a ff such temperatures outlet 26. Grilled inlets zlior cool air are proiere is always piesent the hazard of fire. One i vided in the sides of the lagging adiacent the of the main sources of fires in such apparatus is oil leaking from the lubricating system and pedestal the entering therethmugh passcontn sting highl ing in cooling relation to the pedestal and :beara yheated parts of the apparatus. 40 t d Where oil governors are used there is presented mg and t as 1 ecQmeShea e i another source of oil leakage. umldmft th t i e 9 an 25 Inasmuch as it is difficult, if not impossible, e dischargmg'thmuglll t an outlet at th to positively prevent such leakage of oil, it 'be- Ofthe latter l 'f i nt t a comes essential to eliminate or guard against the ariangeleent provldes ie e 1 other part of the fire hazard, that is, the presmmjof alr between the spaces 1 i ence of highly heated pieces of apparatus -with 7170 P up f efwayheat Whlch mayrpass which the leaking 'oil may contact. the msju 1eted 9 .1 To this end, the present invention provides Adehtlonal 0001 mlets 28 are did m means forming a barrier within the space 'enh sldes of the laggmg of p and are closed by the lagging of a turbine unit and positioned that the cool air entering therethrough ing to prevent flow of heat from the turbine and Passes 3 3 relation with g t t h its valve chest to parts of the installation'which governor e Ore discharging t rough the might be contacted by leaking oil, such as the grilled outlet 29. f i

vbearingand its pedestal and the governor, these It l be 'ObViOuS h t natural draft y be supplemented by forced or induced draft, if desired.

From the foregoing it will be apparent that not only is the hazard of fire in such an installation materially reduced, if not completely eliminated, but also the bearing and governor are air cooled to such an extent as to materially relieve the load which would otherwise be imposed upon the oil coolers. While the invention has been shown in but one form, it will be obvious to those skilled in the art that it is not so limited, but is susceptible of various changes and modifications without departing from the spirit thereof, and it is desired, therefore, that only such limitations shall be placed thereupon as are specifically set forth in the appended claims.

What is claimed is:

l. The combination with an elastic fluid turbine having lubricant-utilizing apparatus adjacent one end thereof, of means for minimizing the fire hazard due toescaping lubricant contacting highly heated parts; said means compris- .1ing structure providing an upright duct which encloses the lubricant-utilizing apparatus and .has at least a, portion disposed between said turbine and the lubricant-utilizing apparatus, said .structure being formed to provide an air inlet opening at or near the base of the apparatus and an outlet opening arranged above the apparatus in order that the duct may function to provide a natural draft of air which is effective to cool .parts exposedthereto below the ignition temperature of escaping lubricant.

2. The combination with an elastic fluid turlbine having lubricant-utilizing apparatus adjacentone end thereof, of means for minimizing the fire hazarddue to escaping lubricant contact- ;inghighly. heatedparts; said means comprising 'structure enclosing the turbine and the lubricantfutilizing apparatus and providing therebetween an insulating barrier against flow of heat from :the former to the latter; and means for collecti118. and removing from the enclosed space about the lubricant-utilizing apparatus any heat pass- .ingthe barrier. 1 3. Structure as specified in claim 2, wherein the structure enclosing the turbine and lubricant-utilizing apparatus is formed to provide an air inlet opening at or near the base of said apparatus and an outlet opening above the apparatus ;in order to provide a natural draft of air which .is efiective to cool parts exposed thereto below the ignition temperature of escaping lubricant. l. The combination with an elastic fluid turbine havinglubricant-utilizing apparatus adjacent one end thereof, of means forminimizing the" fire ha'zard'due to escaping lubricant contacting highly heated parts; said means comprising lagging enclosing the turbine and the lubricanteutilizing apparatus, said lagging being formed to provide a lower air inlet opening to and an upper air outlet opening from the space enclosed by said lagging, said openings beingso disposed with respect to the turbine and the.

"lubricant-utilizing apparatus as to provide there- "between anatural' draft vertically-moving wall of air. Y n

af'rhe" combination with an elastic fluid tur- "bine having lubricant-utilizing apparatus adja-:

cent one 'end thereof, of meansfor minimizing 'the'fire'hazarddue to escaping lubricant contacting highly heated parts; said means comprising lagging enclosing the turbine and lubricant-utilizing apparatus, a transverse1y-extend-;

}through of heat. r

7. Structure as specified in claim 5, wherein the last-mentioned means comprises a lower cool air inlet and an upper warm air outlet through the lagging so disposed with respect to the partition that air entering the enclosed space about "the lubricant-utilizing apparatus through said inlet a'ndleavi'ng the space through said outlet provides a vertically-moving curtain of air at the lubricant-utilizing apparatus side of the partition adapted to collect and carry away heat passing through said partition from the turbine.

' 8. Apparatus of the character described comprising an elastic-fluid turbine; a valve chest adjacent one end of the turbine; valve mechanism within the chest for controlling admission of high-temperature motive fluid to the turbine; a governor positioned in spaced relation to the turbine and valve chest and adapted to control action of the valve mechanism; lagging enclosing said turbine, chest and governor and having a lower cool air inlet and an upper warm air outletso disposed that air entering the enclosed space through said inlet and leaving the space through said outlet provides a vertically-moving curtain of-air separating the governor from the turbine and chest and adapted to collect and carthe turbine rotor, said bearing being spaced from the turbine casing in a direction axially thereof; lagging enclosing said turbin and bearing and having a lower cool air inlet and an upper warm air outlet so disposed that air entering the enclosed space'through said inlet and leaving the space through said outlet provides a verticallymoving curtain of 'air separating the bearing from the turbine and adapted to collect and carry away heat from the turbine before it can reach the bearing.

10. Apparatus of the character described comprising an elastic-fluid turbine including a rotor and a casing therefor; a valve chest adjacent one end of the turbine; valve mechanism within the chest for controlling admission of high-temperature motive'fiuid to the turbine; a bearing support adjacent said'one end of the turbine; a hearing carried by said support and adapted to receive one end of the turbine rotor; a governor disposed above the bearing and adapted to control actionof the valve mechanism, said bearing and governor being spaced from the turbine and an upper warm air outletso disposed that air en- ,teringthe enclosed space through said inlet and leaving the space through said outlet provides a natural draft moving curtain of air in the space between the turbin and chest at one side and .thebearing and governorat the other side, said ourtainofair; being adapted to collect and carry 12. Structure as specified in claim 10, wherein the lagging is provided with first and second cool air inlets so disposed that cool air entering th first inlet flows in cooling relation to the bearing and cool air entering the second inlet flows in' cooling relation to the governor.

RICHARD B. LUCKENBACH. 

